Erlenmeyer Flask 5000 mL
All of our flasks are made from borosilicate type glass which is nice because they can be transferred directly from heat to ice and not crack like normal glass. (We do not recommend the use of an electric element. If this cannot be avoided, we recommend using a larger pot as a hot water bath on the stove.)
Great Flask for yeast culturing. Opening takes a #9 Stopper.
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Even if you’re doing 5 gallon batches more often than not, I like these bigger flasks because they are WAY easier to work with. You know when you have that perfect 2 liter starter set up on your kitchen counter, full to the brim, and you come back the next morning and most of it is out of the flask and on the counter? With a 5 liter, you have some headspace and that is way less likely! Plus It’s easier to cook in without having a boilover. Honestly, it’s just easier all the way around!
Recommended Process for Use of Flask:
Double Boiler Method
It is important for your safety to heat water in the flask with a heat source that distributes heat evenly. Our manufacturer has confirmed that direct heat to the glass can break down its integrity and break if the heat source doesn't distribute evenly.
We recommend using the "double boiler method." This process involves using a boiling water bath on the outside of the flask to heat up the water inside the flask. All you need is a kettle 3 gallons or larger. This process is much safer and efficient. If the flask should break or boil over, your kettle will be there to collect the contents, thus keeping your stove clean and keeping you away from potential harm.